THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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To make additional copies of enzymes.
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To make exact copies of DNA for all new cells.
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To make high energy molecules in the form of ATP.
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To make a copy of the DNA to be transported to the ribosomes.
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Detailed explanation-1: -Cells must replicate their DNA before they can divide. This ensures that each daughter cell gets a copy of the genome, and therefore, successful inheritance of genetic traits. DNA replication is an essential process and the basic mechanism is conserved in all organisms.
Detailed explanation-2: -When one cell divides into two, both must have a copy of the genetic information. Therefore, before cell division occurs, the genes must also make duplicates of themselves so that all of the important genetic information ends up in each of the new cells.
Detailed explanation-3: -How does a cell generate an exact copy of genetic materials under such conditions? During every cell division, a cell must duplicate its chromosomal DNA through a process called DNA replication. The duplicated DNA is then segregated into two “daughter” cells that inherit the same genetic information.
Detailed explanation-4: -If the two strands of a DNA molecule are separated, each can be used as a pattern or template to produce a complementary strand. Each template and its new complement together then form a new DNA double helix, identical to the original.
Detailed explanation-5: -When DNA is replicated that typically is part of cell division, leading to a new cell that contains errors in the DNA that will subsequently be present in all cells derived from there. If that error is in a coding sequence all protein products derived from that erroneous DNA will contain the error.